[Octave-bug-tracker] [bug #49532] matrix multiplication in package parallel

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?49532>

                 Summary: matrix multiplication in package parallel
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Fri 04 Nov 2016 06:17:10 PM UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Crash
                  Status: None
             Assigned to: None
         Originator Name: Ioan Magdau
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.2.0-rc2
        Operating System: Mac OS

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Details:

--------------code---------------

pkg load parallel;

function par_test(t)

    N=128;
    A=randi(N,N);
    B=randi(N,N);
    A*B;
    
endfunction

pararrayfun(nproc, @par_test, 1:3, "UniformOutput", false)

--------------Error--------------

parcellfun: 0/2 jobs donepanic: Segmentation fault: 11 -- stopping myself...
panic: Segmentation fault: 11 -- stopping myself...
warning: parcellfun: premature exit due to closed pipe
warning: called from
    parcellfun at line 347 column 11
    pararrayfun at line 85 column 26
    testing at line 90 column 1

warning: broken pipe
warning: broken pipe

--------------Info--------------

parallel version 3.1.1

-------------Comments----------

simply running par_test(1) works
running in parallel works for N<128, gives a seg fault for N>=128
running in parallel works on a Linux machine






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